Synthesis of New Derivatives of BEDT-TTF: Installation of Alkyl, Ethynyl, and Metal-Binding Side Chains and Formation of Tris(BEDT-TTF) Systems

Abstract

The syntheses of new BEDT-TTF derivatives are described. These comprise BEDT-TTF with one ethynyl group (HC≡C-), with two (n-heptyl) or four (n-butyl) alkyl side chains, with two trans acetal (-CH(OMe)2) groups, with two trans aminomethyl (-CH2NH2) groups, and with an iminodiacetate (-CH2N(CH2CO2−)2 side chain. Three transition metal salts have been prepared from the latter donor, and their magnetic properties are reported. Three tris-donor systems are reported bearing three BEDT-TTF derivatives with ester links to a core derived from benzene-1,3,5-tricarboxylic acid. The stereochemistry and molecular structure of the donors are discussed. X-ray crystal structures of two BEDT-TTF donors are reported: one with two CH(OMe)2 groups and with one a -CH2N(CH2CO2Me)2 side chain.

Perspectives on Molecular Materials—A Tribute to Professor Peter Day

“…The contribution by J. D. Wallis et al at Nottingham Trent University (UK) and M. Pilkington et al at Brock University (Canada), ref. [19], reports the syntheses of new BEDT-TTF derivatives with (i) one ethynyl group (HC≡C-), (ii) two (n-heptyl), (iii) four (n-butyl) alkyl side chains, (iv) two trans acetal (-CH(OMe) 2 ) groups, (v) two trans aminomethyl (-CH 2 NH 2 ) groups, or (vi) an iminodiacetate (-CH 2 N(CH 2 CO 2 − ) 2 side chain. The contribution also reports the synthesis and magnetic properties of three transition metal salts from the latter donor, as well as the synthesis of three tris-donor systems bearing three BEDT-TTF derivatives with ester links to a core derived from benzene-1,3,5-tricarboxylic acid.…”